高中英语状语从句综合单选题

During the reconstruction of the city , many modern tall building went up         old shabby houses were torn down.

A．in what

B．where

C．in which

D．which

If you are travelling _______the customs are really foreign to your own, please do as the Romans do.

A．in which

B．what

C．when

D．where

House prices vary from place to place and are usually high _____ there are famous schools.  

A．where

B．since

C．when

D．whether

_______ weather it is, we shall set out on time.

A．Whatever

B．However

C．Whenever

D．Whether